The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 26, 2006
Filed:
Sep. 02, 2005
Kwin Abram, Columbus, IN (US);
Joe Callahan, Greenwood, IN (US);
Ivan Arbuckle, Columbus, IN (US);
Robin Willats, Columbus, IN (US);
Kwin Abram, Columbus, IN (US);
Joe Callahan, Greenwood, IN (US);
Ivan Arbuckle, Columbus, IN (US);
Robin Willats, Columbus, IN (US);
Arvin Technologies, Inc., Troy, MI (US);
Abstract
An apparatus for controlling sound of an engine comprises a sound sensor, an exhaust valve, and a controller. The controller is configured to determine a sound level of a peak sound frequency within a predetermined sound frequency range by use of output from the sound sensor, compare the sound level of the peak sound frequency to a predetermined sound level, and change the position of the exhaust valve based on the comparison between the sound level of the peak sound frequency and the predetermined sound level. An associated method is disclosed.